2) Tracking of Movement of Small Animals in Forest Ecosystems: The Search for a Flexible, Affordable, and Effective Solution. This challenge seeks flexible, field-ready solutions that enable ecosystem-wide and simultaneous tracking of multiple individuals of several small vertebrate species in dense forest ecosystems and that collects and integrates data on why, where, how and when animals move throughout ecosystems.

3) Ecosystem Services: The Nature We Need. Develop solutions that will measure ecosystem services consistently across large areas, measure the cultural and spiritual value of ecosystems, and connect people with ecosystem services.

Presented by Jamie Reaser, PhD, Executive Director of the National Invasive Species Council

4) City Limits: Halting the Entry and Spread of Invasive Species. The challenge seeks innovative approaches for the early detection of and the rapid response to invasive species introduced through ports of entry in urban environments.

5) Prevent plastic from becoming marine debris in the oceans. The challenge is to stop the flow of plastic waste to the ocean in key, top-polluting locations (China, Indonesia, the Philippines, Thailand, and Vietnam).